Open AccessOne dimensional hydrodynamic modelling of pamba river for identifying the flood vulnerability
Author(s) -
B Anju,
T. K. Drissia,
P. T. Nowshaja
Publication year - 2021
Publication title -
iop conference series. materials science and engineering
Language(s) - English
Resource type - Journals
eISSN - 1757-899X
pISSN - 1757-8981
DOI - 10.1088/1757-899x/1114/1/012023
Subject(s) - hydrology (agriculture) , flood myth , environmental science , spillway , water level , vulnerability (computing) , geology , computer science , geotechnical engineering , geography , cartography , archaeology , computer security
Hydrodynamic modelling is a powerful tool to understand and analyse a river flow and its conditions. The identification of flood vulnerability areas of Pamba river helps to minimize the damages associated with the flood. A hydrodynamic river model was customised and calibrated for the river Pamba in Kerala using MIKE HYDRO River model. The model was calibrated using Manning’s roughness coefficient. In this study, we utilize the time series of daily discharge and water level of different gauging station of Centre Water Commission at Kallooppara, Malakkara, Thumpamon and water level data of Thottappalli spillway. The SRTM DEM was used to generate the flood model for the period June to August 2010. The model performance was assessed by comparing observed and stimulated water level at the upstream and downstream of the river. The correlation coefficient value obtained in the range of 0.53 to 0.94. The outcomes of the study can benefit future modelling effort through the provision of robust tool to predict water levels at various points of the river. This study can help the water resources policy makers for arriving at suitable mitigation measures.